1.He asked us about our school life.
2.Do you know the answers to these questions?
3.They were surprised that a snake crossed the road.
4.The best way to learn English is through practice.
5.Twenty percent of students don't play sports at all at school.第5题少了个the5.Twenty percent of the students don't play sports at all at school.看漏了很抱歉，在students前加一个the表示特指，那些学生。